Ok so about a week ago i started having this problem and its getting on my nerves... when i turn my car on, sometimes the check engine light will stay on, if it stays on then when i try to drive my car it wont let me go past 3000 rpms... the car is a 95 civic with a b16 swap in it... now sometimes when i start the car the check engine light will turn off and the car will run fine, Ive tried everything i know and cant figure this thing out, any feedback would be greatly appreciated, and i tried gettin the check engine light code but it does nothing... Any Suggestions?

 

Something is throwing you into limp mode. If it's an off and on occurrence it's often wiring.

 

Check your codes. It could be something like a crank angle sensor or the IACV.

 

i tried checkin the code but it dont give me one

 

Right, it's in limp mode.

 

jump the code when you have the CEL

 

There won't be a code, it's in limp mode. It stays solid when you try to check.

 

switch out the ecu

 

the ecu might be bad. the car is in limp mode like everyone said. Have you dont any work on your car recently?

 

im tryin to process this....it will throw a cel, but it wont tell you what code it is??? this doesnt sound right to me...with obd1, when i had a cel, and it would go away, i could still hook the jumper and it would tell me what code it was throwing.

 

Leave something shorting the jumper so when it does occur it will flash what code it is...

 

You guys aren't getting it. It's randomly being thrown into limp mode. i.e. there's no code, solid cel, when the code is checked. That's what he's already stated.

My guess is still wiring since it randomly works, and randomly doesn't.

 

Thank you, at least someone here read the post completely... I know how to check the code, and when to check it but it wont flash. the only thing done to the car was i added hids, but its a plug and play unit, could that be drawing too much power and putting my car in limp mode?

 

No, that wouldn't effect the ECU.

 

try a different ecu

 

dont know if you chipped your ecu or anything like that. i had a similar problem after and since i had a jdm small bix p30...i had to snip J1. Went back to the original honda setting.

id double check that it was j1.

 

That is a possibility if the chip isn't making good contact.

 

that happen to me once and it was cause of my ecu...after i've switched it out.. it worked fine..

 

i ended buying another stock p30. Re chipped the old one and its back to normal.

try swapping ecu's with a friend to see if that solves a problem?